Embossed-printing machine



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8. MARANS EMBOSSED PRINTING MACHINE Original Filed June 23, 1925 LVZZZ Q Q Q Qfl mw G 0 f IN VEN TOR.

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Patented Jan: 17, 1928.

UNITED STATES PATENT OFFICE.

SAMUEL MARANS, ATLANTIC CITY, NEW JERSEY, ASSIGNOB 01' ONE-EAL! CHARLES 1P. PROFFATT, OF OCEAN CITY, NEW JERSEY. I

EMBOSSED-PRINTING MACHINE.

Original application filed June 23, 1925, Serial No. 89,084. Divided and this application fled li'ovember 88,

1925. Serial No. 71,964.

This invention relates to apparatus for baking or treating by heat paper stock, cards or the like, that have been printed and coated to produce engraved or embossed ef- 5 fects.

The invention is a part of an apparatus disclosed in an application for patent filed June 28d, 1925, and numbered 39,084, which has eventuated into Patent Number 1,600,-

553, dated September 21, 1926, of which this is a division, and the said invention is intended primarily for use in associated relation with a printing apparatus disclosed in the said application, although this heating and baking apparatus is capable of use in connection with material that has been prepared by other printing apparatus.

It is an object of this invention to produce a furnace and a conveyer operating therein which is capable of subjecting printed and coated stock to heat in a manner that the device will be effective to properly heat the stock and the deposits thereon which are applied to the stock in the embossed printing process in order that the coating will be hardened and properly set.

It is furthermore an' object of this invention to produce a heater or oven, through which a conveyer travels for carrying the printed and cut material, and in order that the deposit may be properly baked without injury to the card or the cardboard, (the same to be hereinafter referred to as cards,

the said term being understood to mean any stock in the nature of cardboard, paper or the like bearing the deposits), it as been found in practice that it is deslrable to subject the said cards to the act-ion of comparatively intense heat intermittently and to maintain the temperature of the cards in a heated state between the zones of the more intense heat. By the arrangement just stated, the heat is not sufficiently great to impair the cards or scorch them, while at the same time, the deposits are properly heated so that they set and remain hard.

It is a still further object of this invention to produce novel means for regulating the temperature of the oven by the employment of sectional heaters which may be controlled in sections to produce the desired temperatures, and the said heating device,

which is in the nature of electrical resistance co ls, may be expeditiously and inexpensively repalred, since each resistance element is of short length separately installed.

With the foregoing and other objects in view, the invention consists in the details of construction, and in the arrangement and combination of parts to be hereinafter more fully set forth and claimed.

In describing the invention in detail, reference will be had to the accompanying drawings forming part of this application wherein like characters denote corresponding parts in the several views, and in which Figure 1 illustrates a plan view of a combined heater and conveyer;

Figure 2 illustrates a view in side elevation of the portion of the device which comprises the heater or oven;

Figure 3 illustrates a diagrammatic view of the heating appliance for the oven.

It will be understood that after cards or stock have been printed and pro erly coated, they must be subjected to a baiking process, and in the present embodiment of the invention, a conveyer and oven are em loyed and preferably the conveyer should located in operative relation to the delivery of a printing mechanism in order that the conveyer or the oven will receive cards or stock therefrom.

The conveyer and bakin device or oven of the present invention includes an suitable frame 63 having drums 64' an 65 journaled at its ends, over which a wire mesh conveyer belt 66 is operated; It has been 90 found in practice that owing to the character of the wire mesh, the belt 'does not run straight at all times, but has a tendency to creep axially of the drum. The creepin action is supposed to be due to the unequa tension strength of the belt throughout its width and in order to guard against such creeping, one ormore guide rollers 67 may be journaled on vertical axes such as 68 located near the edge of the conveyer belt and on the side toward which the belt is creeping, and this arrangement has been found to hold the belt against undue lateral movement. The belt operates through an oven which may be suitably encased, but which preferably has a structure comprising a plurality of side posts 69 and upper and lower transversely disposed plates 70 and 71, respectively, that constitute supports or an chorages for the top and bottom walls 72 and 73, respectively. The top and bottom walls may be of any heat resisting or refractory material such as asbestos and they constitute bases on which the heating elements are installed.

It has been found in practice that the degree of heat effective to produce the best results in fusing, melting or otherwise treating the deposits used in embossed printing is apt to scorch the card when subjected to the heat for the desired length of time to produce the best results, and therefore, the applicant has provided an oven having zones of relatively inten'seheat and a zone of relatively low temperature in order that the card may be subjected to the relatively great heat at first for a short time, then maintained in a zone of less heat, and then again subjected to a zone of relatively great heat, from which it is carried by the conveyer. To the end just described, the elements 72 and 73 constitute bases on which appropriate fittings or terminal plates 74; may be secured, the same being arranged as separate units on each side of the bases and having suitable terminals to which" resistance elements 7 5, in the nature of wire, may be connected in a manner to permit current to be supplied to the group of resistance elements at one end of the furnace, or to the group at the other end of the furnace, or to the groups simultaneously. Furthermore, each resistance element is a unit of comparatively short length extending from one plate to the other, and if any one of the short lengths becomes impaired, it can be renewed without excessive cost.

The wiring diagram is shown in Fig. 3 and a description of the same is believed to be unnecessary to an understanding of the arrangement, it being sufficient to say that suitable switches 76 are provided for controlling the circuits.

As the upper and lower walls of the furnace carry heating units, the cards will be subjected to heat from above and beneath and such heating also adds to the eficiency of an oven intended to treat deposits for embossed printing, but in order to maintain the conveyer in such relation to the heating devices as will cause a uniform action on the cards, the conveyer is guided within the furnace on cross bars'77 which are somewhat similar to the cross plates and 71,

except that the cross bars have convex upper surfaces to minimize the friction between the conveyer belt and the said bars. Preferably the space between the conveyer and the upper heating elements is slightly greater than the distance between the conveyer and the lower heating elements, as this will allow for any distortion of the card or material as it is being carried by the conveyer. When cards and the like are heated, they have a tendency to curl or bend, so that by the relation of parts just indicated, a greater clearance will be above the conveyer in order that even if they become distorted, they will not come in contact with the heating elements. The presence of the lower heating element minimizes the curling action or distortion of the cards in order that if the heat is-properly regulated, there is little danger of undue misshaping of the cards.

Power may be applied for operating the drums in any convenient manner, but as here shown, a shaft 78 has a pulley 79 secured on it, which may be engaged by a belt or other driving means, the said shaft 78 having a pinion 80 engaging a gear wheel 81 on a stub shaft 82. The gear wheel 81 is connected to a pinion 83 on the stub shaft for the purpose of driving the same, and the pinion 83 meshes with a gear wheel 84 on the shaft 85 of the drum 65. Of course, other means may be provided for operating the conveyer, and the inventor does not wish to be limited with respect to the same.

It is the purpose of the inventor to provide switches which will control the heating agents whereby the upper or lower zones of the furnace may have their temperatures increased or diminished and, of course, in the event that other heating agencies are employed, he would provide for heating both the upper and lower zones at about or approximately the same temperature in order that the heat under the conveyer and the heated zone above the conveyer would be approximately the same, regardless of whether the heat was increased or diminished. 0

Figure 3 shows switches for controlling the circuits, it being shown that the switches 76 heretofore described may be utilized to regulate the current to the heating elements. As such switch mechanisms are well known, further detail description is believed unnecessary.

I claim:

In an embossed printing machine, a furnace having a conveyer operating therein, said furnace having sets of heating units above and below the conveyer, the said sets of heating unitsbeing located at the ends of the furnace and the said furnace having an intermediate zone between them of less are temperature than that occupied by the heatfor connecting a group of said elements in ing units, each of said heating units comseries whereby an element when impaired prising a plurality of heating elements, the may be replaced without affecting the re- 1 said heating elements consisting of single mainder of the circuit, and switch controls 5 length electrically resistant material whose by which current to the heating units may ends are secured at opposite sides of the be controlled oven, terminal conductors for said elements SAMUEL MARANS. 

